/*
 * Copyright 2015 GenerallyCloud.com
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package com.generallycloud.nio.buffer;

import com.generallycloud.nio.LifeCycle;

//FIXME 考虑加入free链表
//FIXME 关闭内存池要与申请内存方法互斥
public interface ByteBufAllocator extends LifeCycle{

	public abstract void release(ByteBuf buf);

	public abstract ByteBuf allocate(int limit);
	
	public abstract ByteBuf allocate(int limit,int maxLimit);
	
	public abstract ByteBuf reallocate(ByteBuf buf,int limit);
	
	public abstract ByteBuf reallocate(ByteBuf buf,int limit,boolean copyOld);
	
	public abstract ByteBuf reallocate(ByteBuf buf,int limit,int maxLimit);
	
	public abstract ByteBuf reallocate(ByteBuf buf,int limit,int maxLimit,boolean copyOld);
	
	public abstract int getUnitMemorySize();
	
	public abstract void freeMemory();
	
	public abstract int getCapacity();
	
	public abstract boolean isDirect();

}